fix(app): forward voice + tokenjuice-treesitter to the desktop build

[oxoxDev]

Summary

• Forwards voice and tokenjuice-treesitter to the core dependency in app/src-tauri/Cargo.toml, which consumes the core with default-features = false.
• Fixes a regression already shipped in v0.61.2: the desktop app is currently built with the voice facade's disabled stub — dictation, TTS, and podcast audio are absent from the shipped binary.
• Also restores tree-sitter-backed TokenJuice compression, which has been silently falling back to its brace-depth heuristic in the desktop app.
• Two-line manifest change; the lockfile delta is the evidence.

Problem

app/src-tauri/Cargo.toml declares the core as:

openhuman_core = { path = "../..", package = "openhuman", default-features = false, features = [
    "media",
] }

default-features = false means the desktop app only receives features listed explicitly. The core's default = ["tokenjuice-treesitter", "voice", "media"] does not apply.

The voice gate (#4803 / PR #4833, merged 2026-07-14) moved openhuman::voice + openhuman::audio_toolkit behind a default-ON voice feature but did not add it here. tokenjuice-treesitter has never been forwarded.

Consequences in the shipped desktop build:

• openhuman::voice compiles to its #[cfg(not(feature = "voice"))] stub, so the voice/audio controllers are unregistered — openhuman.voice_* returns unknown-method and the namespaces are absent from /schema.
• The dictation / TTS / podcast agent tools are absent from the tool belt.
• TokenJuice uses the brace-depth heuristic rather than tree-sitter.

Why nothing caught it. The app compiles cleanly either way — silent absence is precisely what a correct gate produces. The Rust Feature-Gate Smoke lane checks the core manifest, not the app's. No test asserts the shipped app's tool surface.

Blast radius. v0.61.2 (tagged 2026-07-15) is the first release cut from a release branch containing the voice gate, so it is the first affected shipped build. v0.61.0 and earlier predate the promotion and are unaffected — verified by inspecting src/openhuman/voice/mod.rs at each tag (26 #[cfg(feature = "voice")] sites at v0.61.2, zero at v0.61.0).

Solution

Add the two missing features to the existing multi-line array:

openhuman_core = { path = "../..", package = "openhuman", default-features = false, features = [
    "media",
    "voice",
    "tokenjuice-treesitter",
] }

The array shape is kept multi-line so sibling gate PRs (#4912 flows, #4913 skills, #4914 mcp, #4915 meet) each append one line without reflowing.

The lockfile delta is the proof this was real. app/src-tauri/Cargo.lock gains:

• hound and lettre — voice's exclusive dependencies, per the gate table in AGENTS.md
• tree-sitter, tree-sitter-python, tree-sitter-rust, tree-sitter-typescript, streaming-iterator

These were absent from the desktop app's dependency graph entirely, confirming the voice code was never compiled into the shipped binary.

Follow-up (not in this PR). The underlying gap is that CI cannot see this class of defect: the feature-gate smoke lane runs cargo check, which never links a binary or compiles test code. A separate PR will add a cargo test --no-default-features step and cfg the two all_tests.rs assertions that currently fail in the disabled config.

Submission Checklist

• N/A: manifest-only change — the restored behaviour is the pre-feat(core): feature gate — voice #4803 desktop surface, already covered by existing voice tests in the default (enabled) configuration. No new logic to test.
• N/A: no changed lines are executable code — diff-cover has no Rust/TS statements to measure in a Cargo manifest + lockfile.
• N/A: behaviour-only change — restores an existing feature surface; no matrix rows added, removed, or renamed.
• N/A: no matrix feature IDs affected by this change.
• No new external network dependencies introduced — hound, lettre, and the tree-sitter* crates are already core dependencies; this only re-enables them for the desktop build.
• N/A: this restores a release-cut surface rather than changing one; the existing manual smoke steps for dictation/TTS already cover it.
• Linked issue closed via Closes in the ## Related section

Impact

• Platform: desktop (all OSes). No CLI, mobile, or web impact — the core binary and CLI already build with default features.
• User-visible: restores dictation, TTS, always-on listening, and podcast audio to the desktop app; restores tree-sitter-backed context compression.
• Binary size: increases the desktop bundle by the hound / lettre / tree-sitter* crates — this is the intended pre-gate baseline, not a regression.
• Migration/compat: none. No wire-contract, schema, or config change.
• Security: none.
• Risk: low. Two lines of manifest; verified by cargo check on the app manifest.

Related

• Closes feat(core): feature gate — voice #4803
• Regression from: PR feat(core): compile-time voice feature gate (voice + audio_toolkit) (#4803) #4833 (voice gate)
• Epic: Feature gates for core subsystems — tracking (lightweight harness builds) #4795
• Sibling gate PRs that each append to this same features array: feat(core): compile-time flows feature gate (#4797) #4912 (flows), feat(core): compile-time skills feature gate (#4798) #4913 (skills), feat(core): compile-time mcp feature gate (#4799) #4914 (mcp), feat(core): compile-time meet feature gate (#4800) #4915 (meet), feat(web3): compile-time web3 feature gate for wallet/web3/x402 (#4802) #4855 (web3)
• Follow-up PR(s)/TODOs: add cargo test --no-default-features to the feature-gate smoke lane and cfg the two pre-existing voice assertions in src/core/all_tests.rs (group_mapping_smoke, harness_excludes_gated_namespaces) that fail in the disabled config today. Every future gate needs its feature forwarded here — worth adding to the epic's Definition of Done.

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AI Authored PR Metadata (required for Codex/Linear PRs)

Linear Issue

• Key: N/A — GitHub-issue driven
• URL: N/A

Commit & Branch

• Branch: fix/app-forward-voice-tokenjuice
• Commit SHA: 514a5b521

Validation Run

• N/A: pnpm --filter openhuman-app format:check — no frontend files changed
• N/A: pnpm typecheck — no TypeScript changed
• N/A: Focused tests — no logic changed; see checklist rationale
• N/A: Rust fmt/check (core) — no core source changed
• Tauri fmt/check: GGML_NATIVE=OFF cargo check --manifest-path app/src-tauri/Cargo.toml passes (2m41s)
• Feature forwarding verified: cargo tree --manifest-path app/src-tauri/Cargo.toml -e features -i openhuman reports media, tokenjuice-treesitter, voice

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